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Tailoring the Shape of Metal Ad‐Particles by Doping the Oxide Support
Author(s) -
Shao Xiang,
Prada Stefano,
Giordano Livia,
Pacchioni Gianfranco,
Nilius Niklas,
Freund HansJoachim
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201105355
Subject(s) - dopant , doping , materials science , metal , adsorption , oxide , charge (physics) , chemical physics , nanotechnology , chemical engineering , crystallography , metallurgy , chemistry , optoelectronics , physics , quantum mechanics , engineering
Just a Mo : Tiny Mo concentrations in a CaO film can influence the growth of adsorbed gold. On undoped films, three dimensional gold structures form (see picture, top) whereas on the doped films flat islands appear (bottom). The change results from a charge transfer from the Mo dopant to the Au atoms, a process suggested by STM measurements and DFT calculations.